Shifting device for piers, &amp;c.



No. 700,599. Patented May 20,1902.

W. D. BALDWIN 81- A SUNDH. SHIFTING DEVICE FUR PIER S, 81.6.

. (Application filed Dec. 1'7, 1901.) Modem 2 Shanty-Sheet 1.

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SHIFTING DEVICE FOR PIERS, 8w. (Application flled'Dee. 17, 1901.)

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UNITED STAT S PATENT OFFICE.

WILLIAIWI D. BALDWIN, OF NEW YORK, AND AUGUST SUNDH, OF YONKERS, NEW'YORK, ASSIGNORS TO OTIS ELEVATOR COMPANY, OF EAST ORANGE, NEW JERSEY, ACORPORATION OF NEW JERSEY.

SHIFTING DEVICE FOR PIERS, 84,0.

SPECIFICATION forming part of Letters Patent No. 700,599, dated May 20,1902. Application filed December 17,1901. Serial No. 86,333. (No'mcdeh)To all whom, it may concern:

Be it known that we, WILLIAM D. BALD-7 invented certain new and usefulImprove ments in Shifting Devices for Piers, &c., of which the followingis a specification.

Our invention relates to that class of hoists or devices wherein acapstan is arranged above a footway, with operating means arranged in avault beneath, so that a cable may be readily applied to and carriedfrom the capstan for hauling, lifting, and other purposes;andourinvention consists ofmeans whereby the'movemen'ts of the saidcapstan may be derived from a motor turned in one direction, as fullyset'forth hereinafter and as illustrated in the accompanying drawings,

in which Figure 1 is a sectional elevation showing part of a footway,vault, capstan, and operating appliances embodying our invention.

Fig. 2 is a sectional plan below the cap or roof of the .vault. Fig; 3is an elevation showing a modification wherein the. driving-pul-j leysoperate upon the driving-disk through the medium of gears, and Fig.4 isa part sec- 0 tionalplan ofithecoustruction shown in Fig.

3 upon a plane directly-below thefoot'way.

Below the platform, which may be'the footway of a pier or embankment A,is a vault X, within a casing in whichis a motor M for 35 impartingmovement atdifferent speeds and in difierent directions to a shaft 7,extending through the cap or cover 99f the casing, and.

at the outer end of the shaft is secured a capstan B. ,The motor M isillustrated as an only'in one direction and carries two drivingpulleys31, which are connected-with the shaft by means-of a feather 32, so asto turn therewith but slide thereon, whereby either driving-pulley maybe brought into action to drive a disk 33, secured to the shaft 7. Asshown in Figs. 1 and 2, the driving-pulleys are cone-pulleys engagingdirectly the conelike surface of the disk 33. In the construction shownin'Figs. 3 and 4 the driving-pulleys 30 and 31 engage conical'sockets inthe hubs of spur-Wheels 35 36, each of which gears with an annular gearupon the disk 33. In either case when one driving-pulley, 30, is broughtinto frictional engagement with its coacting part it serves to drive thedisk 33 in one direction, and when the other drivingpulley, 31, isbrought into engagement with its coacting part it drives disk 33 in theopposite direction, While by placing both driving-pulleys inanintermediate position and out of contact with the coacting parts thedisk 33 is not actedupon and will remain at rest.

Different means may be employed for shifting the'position of'the drivingpulleys. In the constructionshown in FigsLland-2 the driving-pulleys areconnectedby aninterme= diate sleeve 37, having ail-annular groove'38 forreceiving pinsuponthe oppositeside of a forked lever 39, connectedto ashaft 40, from which an ar1n'41 extends toone side and is connected by alink 42 with'a lever 43, pivotedto a hanger 44, suspended fromthe cap 9.

Two rods 45 46 extend= upwardthroughthe -cap 9 in such position that theoperator,who

occupies a position adjacent to the handle or key 21',may.place his footupon either rod 45 or 46, and thereby shift the position of thedriving-pulleysx There is a like arrangement in the'construction shownin Figs. 3Jand 4.

It is necessary, as the parts are heavy and acquire considerablemomentum whendriven at a high speed, to applyabrake as thedriving-pulleys are brought to the intermediate position, this furtherbeing required in order that the capstan may remain stationary whenheavy loads are suspended from the cable wound thereon. We thereforemake use of a strap-brake K, the strap 49 of which passes sults. Themotor-shaft 3 in this case rotates around a hand-wheel 50 on the shaft'7 and is connected at opposite ends to arms upon a shaft 51, supportedby a pendent bracket 52. A third arm 53 upon the shaft 51 extendsthrough an ening in a slide 54, carrying set-screws 55 56, which bearupon the arms 57 58 of a T-head lever 59, pivoted toapendent bracket 60and connected by a link-to the lever 43, so that when either of the rods45 46 is depressed the lever 59 will be rocked and will thereby pushback the slide 54 and turn the shaft 51 in the direction of its arrow,Fig. 2, to thereby relax the draft upon the brake-strap. Normally,however, the slide 54 is carried in the reverse direction by the actionof a heavy weight 61 upon one arm of a bell-crank lever 62, pivoted to abracket (33 below the cap 9, so that the brake will be applied exceptwhen one of the rods 45 46 is depressed and as long as it is depressedduring the action of the apparatus. A somewhat similar construction isshown in Figs. 3 and 4:, where the parts are somewhat d-ifierentlyproportioned and arranged to effect the same result.

We do not herein claim, broadly, the combination of a capstan and itsoperating means with the footway of. a pier or embankment, the samebeing set forth in our application, Serial No. 86,332, filed December17, 1901.

Without limiting ourselves to the precise details of construction andarrangement of parts shown, We claim as our invention- 1. Thecombination with a capstan arranged above the footway of a pier orembankment, and with a shaft extending downward into a vault below thefootway, of a motor adapted to rotate in one direction, a pair ofdriving pulleys upon the shaft of the motor, a driving-disk carried bythe shaft of the capstan, means for shifting the pulleys to bring one orthe other into engagement with the disk, and control devices forregulating the speed and stopping and starting the motor and forshifting the pulleys, substantially as set forth.

2. The combination with the footway of a pier or embankment, of acapstan arranged above the same, a shaft extending through the footwayto a vault below the same and provided with a driving-disk, a motoradapted to rotate in one direction, driving-pulleys driven therefrom andadapted to be shifted alternately into and out of engagement to drivethe said disk, acontrol device for stopping and starting and regulatingthe speed of the motor having an operating device above the footway, abrake device, means extending above the footway for shifting thedriving-pulleys, and connections between said means and the brakedevice, substantially as set forth.

3. The combination with the footway of a pier or embankment, of acapstan, drivingdisk, motor, pulleys driven from the motor and adaptedto be alternately brought into action to drive the disk in oppositedirections, means for shifting the pulleys extending to the footway, abrake device, and connections between the brake device and the means forshifting the pulleys, substantially as set forth.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

WILLIAM D. BALDYVIN. AUGUST SUN DH. Witnesses:

W. H. BRADY, H. It. MARsDEN.

